8.2- 8th grade

1.

4 points

Individual _____________ also have unique properties that distinguish them.

2.

4 points

Color and _________ are two obvious clues that can be used to identify minerals.

3.

4 points

Pyrite is often called fool's _________.

4.

4 points

Every property you observe in a ____________ is a clue to its identity.

5.

4 points

A measure of how easily a mineral can be __________ is its hardness.

6.

4 points

The mineral ________ is so soft you can scratch it loose with your fingernail.

7.

4 points

Talcum powder is made from this ________ mineral.

8.

4 points

Diamonds, on the other hand, are the __________ mineral.

9.

4 points

In _________, the Austrian scientist Friedrich Mohs developed a list of common minerals to compare their hardness.

10.

4 points

The scale lists the hardness of ________ minerals.

11.

4 points

Some minerals have a ___________ range rather than a single hardness value.

12.

4 points

This is because ________ are arranged differently in different directions in their crystal structure.

13.

4 points

_________ is the way a mineral reflects light.

14.

4 points

Minerals with a ________ luster, shine like metal.

15.

4 points

When a mineral does not shine like metal, its luster is _________.

16.

4 points

Minerals also can be distinguished by __________ their heft.

17.

4 points

When a mineral is rubbed across a piece of unglazed porcelain tile, a ____________ of powered mineral is left behind.

18.

4 points

Streak is the color of a mineral when it is in a ____________ form.

19.

4 points

The streak _______ works only for minerals that are softer than the streak plate.

20.

4 points

Gold and __________ can be distinguished by a streak test.

21.

4 points

The way a mineral breaks is another clue to its __________.

22.

4 points

Minerals that break along smooth, flat surfaces have ___________.

23.

4 points

Minerals that break with uneven, rough, or jagged surfaces have __________.

24.

4 points

Some ___________ have unique properties.

25.

4 points

Magnetite, as you can guess by its name, is attracted to _______.